Final answer:
High altitude presents challenges such as lower oxygen levels and extreme weather conditions. The author's blindness is beneficial in meeting these challenges due to his heightened senses.
Step-by-step explanation:
Two challenges that high altitude presents to climbers are lower oxygen levels and extreme weather conditions. At high altitudes, the air becomes thinner, making it difficult to breathe and causing altitude sickness. Additionally, extreme cold temperatures and strong winds can pose a threat to climbers.
The author, who is blind, benefits from his blindness in dealing with these challenges. Because he cannot rely on visual cues, he has developed heightened senses of touch, hearing, and smell. These heightened senses allow him to navigate and perceive the environment more effectively in low visibility conditions or when relying on other senses becomes crucial.
Learn more about Challenges of high altitude and the benefit of the author's blindness